Plug of charging and discharging gun and charging and discharging gun

Abstract

The utility model discloses a plug of a charging and discharging gun and the charging and discharging gun, and relates to the technical field of charging and discharging. The plug comprises an insulating shell, a pin assembly and a control assembly, wherein the pin assembly penetrates through the insulating shell and is connected with the connecting wire group; the control assembly comprises two signal pins, the two signal pins are both connected with the connecting wire set, and when the plug is connected with an adaptive discharging socket in an inserted mode and only when the two signal pins are both communicated with the discharging socket, the gun head and the charging and discharging port are powered on so that discharging can be conducted through the discharging socket. The plug can ensure that discharge operation is performed only after plugging is qualified, so that potential safety hazards are reduced, and safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of charging and discharging, especially to a plug of a charging and discharging gun and the charging and discharging gun. BACKGROUND

[0002] New energy vehicles, as representatives of green transportation, have the advantages of energy saving, environmental protection, and cleanliness compared with traditional fuel vehicles, and reduce the environmental protection cost and economic cost of vehicle use. In order to expand the use scene of new energy vehicles, the new energy vehicles also have a discharging function. Compared with the charging function, the start of the discharging function needs to set a separate start signal to enable the electric control system of the new energy vehicle to control the power battery to discharge.

[0003] In the prior art, a signal pin is usually arranged on the plug, and a signal contact is arranged on the matched discharging socket. When the plug is plugged with the discharging socket, the signal pin and the signal contact are in contact and conduction, that is, a discharging signal is given to the electric control system, so that the new energy vehicle discharges externally. The signal contact on the socket is generally in a protruding state to ensure the conduction of the signal contact and the signal pin. However, when the plug is inclined, the signal pin may also be in contact with the signal contact. However, if discharging starts at this time, there is a safety hazard and danger may occur. SUMMARY

[0004] The utility model aims at providing a plug of a charging and discharging gun and the charging and discharging gun, which can ensure that discharging operation is performed only after plugging is qualified, reduce safety hazards, and improve safety.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] A plug of a charging and discharging gun is connected with a gun head through a connection line group, the gun head is used for plugging with a charging and discharging port of a vehicle body, and comprises:

[0007] An insulating shell;

[0008] A pin assembly is arranged in the insulating shell and connected with the connection line group;

[0009] A control assembly comprises two signal pins, both of which are connected with the connection line group. When the plug is plugged with a matched discharging socket, only when both of the signal pins are in communication with the discharging socket, the gun head is electrified with the charging and discharging port to discharge through the discharging socket.

[0010] As an optional solution of the plug of the charging and discharging gun, the pin assembly comprises a ground pin, and both of the signal pins are located on opposite sides of the ground pin.

[0011] As an alternative to the above-mentioned plug of the charging and discharging gun, the insulating shell further comprises a side cover, the side cover comprises a first limiting portion and a second limiting portion, the side wall of the signal pin is provided with a limiting protrusion, and the limiting protrusion is arranged between the first limiting portion and the second limiting portion.

[0012] As an alternative to the above-mentioned plug of the charging and discharging gun, the control assembly further comprises a circuit board and a temperature sensor, the temperature sensor is connected with the circuit board, at least one of the signal pins is connected with the connection wire group through the circuit board, and the circuit board is configured to disconnect the signal pins connected with the circuit board when the temperature of the temperature sensor exceeds a preset value.

[0013] As an alternative to the above-mentioned plug of the charging and discharging gun, the sensing end of the temperature sensor is arranged on the side wall of the insulating shell adhered to the discharge socket.

[0014] As an alternative to the above-mentioned plug of the charging and discharging gun, the plug further comprises a locking assembly, the locking assembly comprises a pressing piece and a locking piece, the locking piece is movably arranged on the insulating shell, the locking piece can be clamped with the discharge socket to lock the plug and the discharge socket, and the pressing piece can drive the locking piece to move to unlock the plug and the discharge socket.

[0015] As an alternative to the above-mentioned plug of the charging and discharging gun, the locking assembly further comprises an elastic piece, the elastic piece abuts against the insulating shell and the locking piece, and the elastic piece is configured to drive the locking piece to lock the plug and the discharge socket.

[0016] As an alternative to the above-mentioned plug of the charging and discharging gun, the control assembly further comprises a circuit board and a press switch, the press switch is arranged in the insulating shell and connected with the circuit board, is located on a side of the locking piece away from the pressing piece and can be pressed by the locking piece, at least one of the signal pins is connected with the connection wire group through the circuit board, and the circuit board is configured to disconnect the signal pins connected with the circuit board when the press switch is triggered.

[0017] As an alternative to the above-mentioned plug of the charging and discharging gun, the insulating shell comprises a main shell and an outer mold, the main shell is arranged in the outer mold, part of the main shell protrudes from the outer mold, the discharge socket is provided with a butt joint groove, the main shell is inserted into the butt joint groove, and the locking piece protrudes from the side wall of the main shell to be clamped with the side wall of the butt joint groove to be locked.

[0018] A charge-discharge gun comprises a plug of the charge-discharge gun, a gun head for plugging with a charge-discharge port of a vehicle body, and a connecting wire set, one end of which is connected with the gun head and the other end of which is connected with the plug.

[0019] The utility model discloses beneficial effects:

[0020] The utility model provides a kind of plug of charge-discharge gun and charge-discharge gun.The plug is connected with the gun head of charge-discharge gun, when plug is plugged in the discharge socket of adaptation, new energy automobile can be discharged to discharge socket by gun head, to power supply for the electric appliance plugged in discharge socket.Due to the plug have two signal pins, and only when two signal pins are communicated with discharge socket, gun head is electrified to discharge by discharge socket, to ensure that plug only when it is directly opposite socket, two signal pins can be communicated with discharge socket.

[0021] The plug can ensure that discharge operation is carried out only after plugging is qualified, reduce security risk, and improve safety. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure diagram of plug and connecting wire set provided by the utility model;

[0023] Figure 2 It is the explosion view of plug and connecting wire set provided by the utility model;

[0024] Figure 3 It is the structure diagram of plug and connecting wire set provided by the utility model, remove outer mold and main shell;

[0025] Figure 4 It is the structure diagram of side cover provided by the utility model;

[0026] Figure 5 It is the structure diagram of locking piece provided by the utility model;

[0027] Figure 6 It is the structure diagram of pressing piece provided by the utility model.

[0028] In the drawing:

[0029] 1, plug;

[0030] 11, insulating shell;111, outer mold;112, main shell;113, side cover;114, inner mold;115, upper cover;1131, first limiting part;1132, second limiting part;1133, first limiting groove;1134, second limiting groove;

[0031] 12, pin assembly;121, ground pin;122, standard support;

[0032] 13, control assembly; 131, signal pin; 1311, limiting protrusion; 132, circuit board; 133, temperature sensor; 134, press switch;

[0033] 14, locking assembly; 141, presser; 1411, first press part; 1412, second press part; 1413, hook; 142, locker; 1421, driving part; 1422, locking part; 1423, through hole; 143, elastic member;

[0034] 2, connecting line group. DETAILED DESCRIPTION

[0035] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0036] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0037] Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Unless specifically stated and limited otherwise, "on" or "under" of a first feature with respect to a second feature can include the first feature directly contacting the second feature, or the first feature not directly contacting the second feature but contacting through another feature between the first feature and the second feature. Also, "on", "above" and "on top of" of a first feature with respect to a second feature includes the first feature directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. "Under", "below" and "underneath" of a first feature with respect to a second feature includes the first feature directly below and obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0039] The technical solutions of the utility model are further illustrated below in combination with the drawings and through specific embodiments.

[0040] The new energy vehicle is a vehicle taking power battery as energy, and stores energy by charging the power battery. In order to expand the use scene of the new energy vehicle, the new energy vehicle also has a discharging function. Compared with the charging function, the starting of the discharging function needs to set a separate starting signal, so that the electric control system of the new energy vehicle controls the power battery to discharge.

[0041] As shown in Figures 1-3 The present embodiment provides a charging and discharging gun. The charging and discharging gun includes a plug 1, a gun head and a connection line group 2. The gun head is used for plugging with a charging and discharging port of a vehicle body. One end of the connection line group 2 is connected with the gun head, and the other end of the connection line group 2 is connected with the plug 1. The connection line group 2 includes a power line and a signal line. The signal line is used for communicating with the electric control system of the new energy vehicle to confirm whether the communication protocol is matched, so as to ensure the safety and efficiency of the charging and discharging process. The power line is used for power transmission.

[0042] The charging and discharging gun has the functions of charging the new energy vehicle and discharging the new energy vehicle. When charging the new energy vehicle, the plug 1 is inserted into an external power source, and the gun head is inserted into the charging and discharging port. When discharging the new energy vehicle, the gun head is inserted into the charging and discharging port, the plug 1 is inserted into a matched discharging socket, and the electric control system of the new energy vehicle is communicated to control the power battery to discharge through the discharging socket.

[0043] In the prior art, a signal pin 131 is arranged on the plug 1, and a signal contact is arranged on the matched discharging socket. When the plug 1 is plugged into the discharging socket, the signal pin 131 is in contact with the signal contact, that is, a signal of discharging is given to the electric control system, so that the new energy vehicle discharges externally. The signal contact on the socket is generally in a protruding state, so as to ensure the contact of the signal contact and the signal pin 131. However, when the plug 1 is inclined, the signal pin 131 may also be in contact with the signal contact. However, if discharging is started at this time, there is a safety hazard, and danger is easily caused.

[0044] As shown in Figures 1-3 To solve the above problems, the embodiment provides a plug 1 of a charging and discharging gun, which comprises an insulating shell 11, a pin assembly 12 and a control assembly 13. The pin assembly 12 is arranged in the insulating shell 11 and connected with a connecting wire group 2. The control assembly 13 comprises a circuit board 132 and two signal pins 131. The two signal pins 131 are both connected with the connecting wire group 2, and at least one signal pin 131 is connected with the connecting wire group 2 through the circuit board 132. When the plug 1 is plugged into the matched discharging socket, the gun head is electrified with the charging and discharging port only when the two signal pins 131 are both in communication with the discharging socket, so as to discharge through the discharging socket.

[0045] The plug 1 is connected with the gun head of the charging and discharging gun. When the plug 1 is plugged into the matched discharging socket, the new energy vehicle can discharge through the gun head to the discharging socket, so as to supply power to the electrical appliance plugged into the discharging socket. Since the plug 1 has two signal pins 131, and the gun head is electrified with the charging and discharging port only when the two signal pins 131 are both in communication with the discharging socket, so as to discharge through the discharging socket, it is ensured that the two signal pins 131 are both in communication with the discharging socket only when the plug 1 is directly opposite to the socket.

[0046] The plug 1 can ensure that discharging operation is performed only after plugging is qualified through double signal pins 131, so as to reduce safety hazards and improve safety.

[0047] As shown in Figures 1-3 The insulating shell 11 comprises a main shell 112 and an outer module 111, and the pin assembly 12 comprises a standard support 122. The main shell 112 is arranged in the outer module 111 and detachably connected, so as to facilitate assembly and disassembly. The standard support 122 is arranged in the outer module 111 and fixedly connected with the main shell 112, and is used for fixing the pin assembly 12. It is worth noting that the standard support 122 also has different specifications for different standards. In the embodiment, the plug 1 is a three-pin plug 1, and the pin assembly 12 comprises a ground pin 121, a zero pin and a fire pin. The ground pin 121, the zero pin and the fire pin are all fixed to the standard support 122, and the angles and positions thereof conform to corresponding standards.

[0048] It is worth mentioning that the three-pin plug 1 is a structure symmetrical about the ground pin 121, in order to ensure that the two signal pins 131 are in contact with the corresponding signal contacts of the discharge socket, the two signal pins 131 are respectively located on the opposite sides of the ground pin 121. If the plug 1 is tilted, one of the signal pins 131 cannot contact the corresponding signal contact, which ensures the safety of the use of the plug 1.

[0049] As shown in Figure 1 , the ends of the two signal pins 131 are flush with the outer surface of the main shell 112, so that the plug 1 can be plugged into a common socket to realize the charging function of the new energy vehicle. In order to adapt to the plug 1, the signal contacts of the corresponding discharge socket need to protrude from the surface of the discharge socket and can be elastically expanded and contracted, so that when the plug 1 is plugged into the discharge socket, the signal pin 131 can retract the signal contact into the discharge socket, avoiding the existence of a gap between the plug 1 and the discharge socket.

[0050] As shown in Figures 2-4 , in order to fix the signal pin 131, the insulating shell 11 further comprises a side cover 113, the side cover 113 comprises a first limiting portion 1131 and a second limiting portion 1132, the side wall of the signal pin 131 is provided with a limiting protrusion 1311, and the limiting protrusion 1311 is arranged between the first limiting portion 1131 and the second limiting portion 1132. The first limiting portion 1131 and the second limiting portion 1132 can limit the movement of the signal pin 131 along the axial direction, so as to ensure that the end of the signal pin 131 is always flush with the outer surface of the main shell 112, avoid the signal pin 131 protruding from the main shell 112 and crushing the signal contact or interfering with the signal contact to cause a gap between the plug 1 and the discharge socket, and also avoid the signal pin 131 retracting into the main shell 112 to cause the signal pin 131 not contacting or poorly contacting the signal contact.

[0051] Further, the first limiting portion 1131 has a first limiting slot 1133 with a side opening, the second limiting portion 1132 has a second limiting slot 1134 with a side opening, and the opening directions of the first limiting slot 1133 and the second limiting slot 1134 are consistent. The signal pin 131 can be simultaneously clamped into the first limiting slot 1133 and the second limiting slot 1134, and the limiting protrusion 1311 is located between the first limiting portion 1131 and the second limiting portion 1132, so as to facilitate the installation of the signal pin 131 to the side cover 113.

[0052] Specifically, in order to save the internal space of the insulating shell 11, two side covers 113 are arranged, and the two side covers 113 are respectively located on the opposite sides of the ground pin 121 of the plug 1. Each side cover 113 is used for fixing one signal pin 131, so as to save the space between the two side covers 113.

[0053] As shown in Figure 2 and Figure 3As shown, the control assembly 13 further comprises a circuit board 132, and the at least one signal pin 131 is connected with the connection wire set 2 through the circuit board 132, so that the circuit board 132 can directly cut off one signal pin 131 when a problem occurs, at which time the electric control system of the new energy vehicle cannot simultaneously detect the signals of the two signal pins 131, and thus stops discharging to the outside, so as to avoid the problem from being expanded and causing serious consequences, and the safety is improved.

[0054] As shown, the control assembly 13 further comprises a circuit board 132, and the at least one signal pin 131 is connected with the connection wire set 2 through the circuit board 132, so that the circuit board 132 can directly cut off one signal pin 131 when a problem occurs, at which time the electric control system of the new energy vehicle cannot simultaneously detect the signals of the two signal pins 131, and thus stops discharging to the outside, so as to avoid the problem from being expanded and causing serious consequences, and the safety is improved.

[0055] In the embodiment, the preset value is 85℃, that is, when the temperature of the plug 1 is higher than 85℃, the new energy vehicle stops discharging. The circuit board 132 can also set a temperature for restoring power supply, so as to simplify the user operation. Specifically, when the temperature decreases to 60℃, the circuit board 132 restores the connection of the signal pin 131, so that the new energy vehicle re-provides power supply to the discharge socket.

[0056] It is worth noting that the preset value can also be other values, as long as the use is safe and will not cause serious consequences such as fire.

[0057] In the embodiment, the sensing end of the temperature sensor 133 is arranged on the side wall of the discharge socket to which the insulating shell 11 is attached. It can be understood that the side wall is attached to the discharge socket, that is, the temperature sensor 133 can also indirectly detect the temperature of the discharge socket, so as to avoid the safety hazard caused by the excessively high temperature of the discharge socket, and further improve the safety.

[0058] As shown in Figure 2 and Figure 3 In order to ensure that the plug 1 will not be disconnected without reason when connected with the discharge socket, the plug 1 further comprises a locking assembly 14, the locking assembly 14 comprises a pressing piece 141 and a locking piece 142, the locking piece 142 is movably arranged in the insulating shell 11, and the locking piece 142 can be clamped with the discharge socket to lock the plug 1 with the discharge socket, and the pressing piece 141 can drive the locking piece 142 to move to unlock the plug 1 with the discharge socket.

[0059] The locking piece 142 can lock the plug 1 with the discharge socket, ensure the connection stability during the discharging process, and the user can also drive the locking piece 142 to move by pressing the pressing piece 141 to unlock the plug 1 with the discharge socket, so as to separate the discharge socket from the plug 1 and make the new energy vehicle stop discharging.

[0060] As shown in Figure 1 , part of the main shell 112 is protruded on the outer mold 111, the discharge socket is provided with a docking groove, the main shell 112 is inserted into the docking groove, the docking groove is matched with the main shell 112 for plug-in, which can further reduce the risk of the pin assembly 12 exposed, avoid the user directly contacting the pin assembly 12 and being electrocuted, also can improve the stability when the plug 1 is plugged with the discharge socket, and play a certain guiding role to the plug 1, avoid the plug 1 to be inclined.

[0061] As shown in Figure 1 and Figure 5 , the locking piece 142 includes a driving part 1421 and a locking part 1422, the driving part 1421 is arranged in the inside of the insulating shell 11, the locking part 1422 is extended from the side wall of the main shell 112 to be clamped and locked with the side wall of the docking groove, the pressing piece 141 can press the driving part 1421 to drive the locking part 1422 to retract into the main shell 112. Compared with the structure that the locking part 1422 is extended from the surface of the main shell 112 abutting the discharge socket, this structure can not only make full use of the space, avoid the surface of the main shell 112 abutting the discharge socket being too compact, but also optimize the pressing direction of the pressing piece 141, facilitate the plug 1 to be separated from the discharge socket.

[0062] Further, the plug 1 includes two groups of locking assemblies 14, the two groups of locking assemblies 14 are arranged on the opposite two side walls of the main shell 112, when the user needs to separate the plug 1 from the discharge socket, the pressing pieces 141 of the two groups of locking assemblies 14 can be pressed from the two sides of the plug 1, that is, the two locking pieces 142 can be unlocked with the discharge socket at the same time, and the force pressed from the two sides of the plug 1 can directly pull out the plug 1.

[0063] As shown in Figure 2 , the locking assembly 14 further includes a resilient piece 143, the resilient piece 143 abuts the insulating shell 11 and the locking piece 142, and the resilient piece 143 is configured to drive the locking piece 142 to lock the plug 1 with the discharge socket. The resilient piece 143 can drive the locking piece 142, so that the locking part 1422 of the locking piece 142 is extended from the side wall of the main shell 112, and also can ensure that the locking part 1422 will not be separated from the discharge socket when the locking part 1422 locks the plug 1 with the discharge socket, improve the convenience and safety.

[0064] It can be understood that when the user is plugging or unplugging the plug 1, there is a large gap between the plug 1 and the discharge socket when the signal pin 131 is just in contact with or about to be separated from the signal contact, and if the new energy vehicle is in the discharging state at this time, there is a certain safety risk.

[0065] As shown in Figure 2 To solve this problem, the control assembly 13 further includes a press switch 134, which is arranged in the insulating shell 11 and connected with the circuit board 132, and is located on the side of the locking piece 142 away from the pressing piece 141 and can be pressed by the locking piece 142. The circuit board 132 is configured to disconnect the signal pin 131 connected with the circuit board 132 when the press switch 134 is triggered.

[0066] That is, whether the plug 1 is plugged or unplugged, the user will press the pressing piece 141 from both sides of the plug 1, and at this time, even if the signal pin 131 is in contact with the signal contact, the circuit board 132 will disconnect the signal pin 131, thereby avoiding the new energy vehicle starting the discharging function, and improving the safety.

[0067] As shown in Figure 6 The pressing piece 141 includes a first pressing part 1411 and a second pressing part 1412, and the locking piece 142 is provided with a through hole 1423. The first pressing part 1411 abuts against the locking piece 142, and the second pressing part 1412 and the contact of the press switch 134 are both arranged corresponding to the through hole 1423, and the second pressing part 1412 can press the contact through the through hole 1423.

[0068] The first pressing part 1411 can push the locking piece 142 to compress the elastic piece 143. During this process, when the contact of the press switch 134 passes through the through hole, the second pressing part 1412 can press the contact, thereby disconnecting the connection of the signal line.

[0069] Further, the pressing piece 141 further includes a clamping hook 1413, which is used for clamping with the main shell 112 to avoid the pressing piece 141 from falling off the insulating shell 11.

[0070] In the embodiment, the press switch 134 is a micro switch, and the elastic piece 143 is a spring.

[0071] As shown in Figure 2 The insulating shell 11 further includes an inner mold 114, which is arranged in the main shell 112 and can fill the space in the main shell 112, so as to ensure the stability of the structure in the main shell 112 and improve the anti-falling ability. It should be noted that the inner mold 114 needs to reserve a space for the movement of the locking piece 142. Specifically, the inner mold 114 is formed by injection molding.

[0072] As shown in Figure 2As shown, the insulating shell 11 further comprises an upper cover 115, which is used to close the opening of the main shell 112, so that the main shell 112 forms a closed structure, and can also avoid overflow of the inner mold 114 during injection molding.

[0073] The above merely describes the preferred embodiments of the present application, and for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the content of the description should not be understood as a limitation of the present application.

Claims

1. A plug of a charge-discharge gun, which is connected to a gun head for plugging with a charge-discharge port of a vehicle body through a connection line set (2), characterized in that, The plug (1) comprises: an insulating shell (11); a pin assembly (12) penetrating the insulating shell (11) and connected with the connecting wire set (2); a control assembly (13) comprising two signal pins (131), both of which are connected with the connecting wire set (2), and only when both of the signal pins (131) are in communication with the discharge socket, the plug head is electrified to discharge through the discharge socket when the plug (1) is plugged into the adapted discharge socket.

2. The plug of the charge-discharge gun according to claim 1, characterized by The pin assembly (12) comprises a ground pin (121), and both of the signal pins (131) are located on opposite sides of the ground pin (121).

3. The plug of the charge-discharge gun according to claim 1, characterized by The insulating shell (11) further comprises a side cover (113) comprising a first limiting portion (1131) and a second limiting portion (1132), and the side wall of the signal pin (131) is provided with a limiting protrusion (1311) arranged between the first limiting portion (1131) and the second limiting portion (1132).

4. The plug of the charge-discharge gun according to claim 1, characterized by The control assembly (13) further comprises a circuit board (132) and a temperature sensor (133), the temperature sensor (133) is connected with the circuit board (132), and at least one of the signal pins (131) is connected with the connecting wire set (2) through the circuit board (132), and the circuit board (132) is configured to disconnect the signal pin (131) connected with the circuit board (132) when the temperature of the temperature sensor (133) exceeds a preset value.

5. The plug of the charge-discharge gun according to claim 4, characterized in that, The sensing end of the temperature sensor (133) is arranged on the side wall of the insulating shell (11) abutting the discharge socket.

6. The plug of the charge-discharge gun according to any one of claims 1 to 5, characterized in that, The plug (1) further comprises a locking assembly (14) comprising a pressing piece (141) and a locking piece (142), the locking piece (142) is movably arranged in the insulating shell (11), and the locking piece (142) can be clamped with the discharge socket to lock the plug (1) with the discharge socket, and the pressing piece (141) can drive the locking piece (142) to move to unlock the plug (1) with the discharge socket.

7. The plug of the charge-discharge gun according to claim 6, characterized in that, The locking assembly (14) further comprises an elastic piece (143) abutting the insulating shell (11) and the locking piece (142), and the elastic piece (143) is configured to drive the locking piece (142) to lock the plug (1) with the discharge socket.

8. The plug of the charge-discharge gun according to claim 6, characterized by The control assembly (13) further comprises a circuit board (132) and a press switch (134), the press switch (134) is arranged in the insulating shell (11) and connected with the circuit board (132), and is located at the side of the locking piece (142) away from the pressing piece (141) and can be pressed by the locking piece (142), at least one signal pin (131) is connected with the connecting wire group (2) through the circuit board (132), and the circuit board (132) is configured to disconnect the signal pin (131) connected with the circuit board (132) when the press switch (134) is triggered.

9. The plug of the charge-discharge gun according to claim 6, characterized in that, The insulating shell (11) comprises a main shell (112) and an outer shell (111), the main shell (112) is arranged in the outer shell (111), part of the main shell (112) is protruded from the outer shell (111), the discharge socket is provided with a docking groove, the main shell (112) is inserted into the docking groove, and the locking piece (142) is extended from the side wall of the main shell (112) to be clamped and locked with the side wall of the docking groove.

10. A charge-discharge gun characterized by comprising: The plug comprising the charge-discharge gun of any one of claims 1-9 further comprises a gun head and a connecting wire group (2), the gun head is used for plugging with a charge-discharge port of a vehicle body, one end of the connecting wire group (2) is connected with the gun head, and the other end of the connecting wire group (2) is connected with the plug (1).

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